Fighter Sweep
  • Home
  • Military Aviation
  • Air Force
  • Navy
  • Spec Ops
  • Expert Analysis
  • Careers
  • Photos
Home Previous Post Next Post
Follow @fightersweep

B-1Bs Are Getting Much-Needed ECM Updates

February 8, 2022
SOFREP No Comments Air Force, Aviation, Expert Analysis, News, Technology

B-1 bombers, B-1B, will soon have new eyes in the backs of their heads. Northrop Grumman and the USAF have signed a contract to update the aging AN/ALQ-161A defensive countermeasures system.

Objects in Mirror…

The BONE plays host to a suite of electronic countermeasures systems. When you’re flying in contested airspace with tons of high-explosives, a good rear-view mirror lets you see the tailgaters long before they’re “closer than they appear.” When those tailgaters have air-to-air missiles or their buddies on the ground have surface-to-air capabilities, it’s time to adjust the mirrors and prepare for some defensive driving.

Airmen from Dyess Air Force Base, Texas, remove an engine from a B-1B Lancer at Barksdale Air Force Base, Louisiana, July 7, 2021. (U.S. Air Force photo by Airman 1st Class Chase Sullivan)

The AN/ALQ-161A is the rear-view mirror for the B-1B Lancer. Purpose-built for the platform in the mid-’80s, the defensive suite has a 360-degree ability to identify, acquire, and jam enemy radars automatically, freeing the crew to fly and bomb. It also provides the rear-view mirror in the form of the Tail Warning function (TWF). “Twiff” is a souped-up mirror that can detect missiles coming from the rear.

A Little History

Touted as the first-ever fully-integrated electronic countermeasures, the AN/ALQ-161 was plagued with problems from the start. Developed by AIL Systems in the mid-70s, the ECM requirements were developed in response to Soviet threats known from the late 60s and early 70s, when the B-1A program was still on the table. Once President Carter ended the B-1A program in 1977, those requirements were put in stasis, to be rolled out when Reagan re-opened the new and improved B-1B program.

AIL dusted off the same system developed for the B-1A, slapped it in, and called it good. Over-simplification, true, but that was the gist. Once the Air Force realized 161 was never going to meet promised design parameters, it renegotiated the contract, spiced it up with “expired” funds to the tune of $1 billion, and made AIL modify the system to increase functionality. Not only would it cost more, but it would also still do less than promised.

Evolution is a Slow Process

AN/ALQ-161 has been overhauled a few times in its history. While the hardware has remained largely the same, software updates, known as “Block” updates, have allowed the system to morph and evolve into what crews need to counter emerging threats. Radar threats are not the same today as in 1970, and updates allow the system to keep up with new technologies. This latest update will (hopefully) bring the ECM suite in line with current and future threats.

On the ground, before a BONE takes off, defensive avionics technicians operate a PLM-4 test set, affectionately termed a “squirt-box,” that interrogates the components of the system. These checks are performed while the crew is on the aircraft, and the DAS technician and defensive systems operator onboard communicate to test system functionality before the flight. An insider with operational knowledge of the system says, “You could reprogram them (the radar signal simulator) to match what band needed testing” and test individual capabilities.

Ground crews move a B-1B Lancer into position at the Benefield Anechoic Facility

Ground crews move a B-1B Lancer into position at the Benefield Anechoic Facility on Edwards Air Force Base, California, May 20, 2021. (Air Force photo by 1st Lt. Christine Saunders)

Updates to the system come after some unique testing. In 2018, the Benefield Anechoic Facility (BAF) at Edwards AFB, CA, hosted a B-1B to provide comprehensive scenarios to its ECM suite. The BAF is the world’s largest anechoic facility. Anechoic literally means “free from echo.” The BAF lets technicians introduce simulated threats to the B-1 without interference from reflected signals or nearby radio interference. The BAF gave maintainers the ability to simulate the aircraft identifying and responding to threats while airborne.

New Adversaries

As China grows its military might and continues its expansion and Russia looks to expand its eastern borders, the USAF has to stay up-to-date in its capabilities. The U.S. has been involved in warfare against technologically inferior enemies for more than twenty years now. Legacy systems on aircraft are sufficient for shoulder-launched missiles and second and third-generation fighters. Still, large-scale conflict with peer and near-peer adversaries opens a whole different can o’ worms. Upgrades are long overdue, and this time (hopefully), they’ll get it right.

Related Posts

  • The B-1B Lancer may be slated for retirement, but it’s still got a lot of fight left in itThe B-1B Lancer may be slated for retirement, but it’s still got a lot of fight left in it
  • America’s only supersonic heavy bomber is being replaced, but it isn’t being retired (yet)America’s only supersonic heavy bomber is being replaced, but it isn’t being retired (yet)
  • Bad to the Bone: Here’s the scoop on Boeing’s plans to turn the B-1B into a supersonic gun shipBad to the Bone: Here’s the scoop on Boeing’s plans to turn the B-1B into a supersonic gun ship
  • Watch: B-1 Lancer Bomber night takeoff in full afterburnerWatch: B-1 Lancer Bomber night takeoff in full afterburner
  • How Fast Are the US Air Force Jets? Supersonic!How Fast Are the US Air Force Jets? Supersonic!

Find Us on Facebook

FighterSweep.com

Sign Up
for the Newsletter

What’s Hot

  • blue-angels-reporter-blacks-out-passes-out
    December 5, 2017

    Watch: News Reporter Blacks Out on Ride with US Navy Blue Angels

  • September 4, 2019

    Photo Gallery: McDonnell Douglas F-4 Phantom II

  • Whistling Death: How The Corsair Got Its Nickname
    August 30, 2019

    Whistling Death: How the Corsair got its nickname

Follow Us

Facebook Twitter Twitter

Recent Comments

  • pak152 " the team came up with what the Brits dubbed as Mustang, powered by a [...]
  • P K Polish AF never has and never will operate Su-27, An-26 aircraft has been out [...]
  • bnarfhyde The best book is also great. have a [...]
  • TerrorTrike ive never survived this long with such a clumsy FL- cG.866B.CO/NC6155hc
  • D4rksupeme yessss truck kunnnnnnnn i needddd you m.866E.CO/vC6155H

© Copyright 2023 SOFREP Media Group. All Rights Reserved.

  • Privacy Policy
  • Terms of Use
  • Advertisers
 

Loading Comments...